$Backcolor: #fb7299;

body {
    height: 100vh;
    background: url(../images/gou.jpg) no-repeat center;
    background-size: cover;
}

.header {
    .header-in {
        height: 80px;
        line-height: 80px;
        text-align: center;

        font: {
            size: 22px;
            weight: 500;
        }

        // font-size: 22px;
        // font-weight: 500;

        color: $Backcolor;
    }

    .countdown {
        text-align: center;
        color: #d699aa;
        font-size: 18px;
        padding: 5px 0;
        font-weight: 500;
    }
}

.control {
    .control-in {
        /* background-color: aqua; */
        text-align: center;

        button {
            background-color: $Backcolor;
            color: #fff;
            text-align: center;
            font-size: 16px;
            cursor: pointer;
            transition: background-color .3s;
            padding: 8px 20px;
            border-radius: 2px;

            &:hover {
                background-color: #ed8ca8;
            }
        }
    }
}

.group {
    h3 {
        height: 40px;
        line-height: 40px;
        text-align: center;
    }

    ul {
        display: flex;
        justify-content: center;

        li {
            margin: 5px;
            width: 120px;
            height: 50px;
            line-height: 50px;
            box-sizing: content-box;
            border: 1px solid #f1f2f3;
            border-radius: 6px;
            background-color: #f6f7f8;
            color: #61666d;
            text-align: center;
            font-weight: 400;
            transition: background-color .3s, color .3s;

            &.active {
                background-color: #438cd4;
                color: #fff;
            }
        }
    }
}